“It’s easier for him to come in and be himself straight away because of that. But if you see his passion for the game and the way he trains it says a lot.

“James plays with real confidence and every winning side needs the energy and tactical knowledge of a player like James.

“It’s been great to see him developing and Evertonians have given him a terrific welcome. Now I want him to carry on growing with the club.”

Martinez feels that McCarthy’s rapid adaptation to life at Goodison has been quickened by the strong dressing room spirit at Everton.

“It’s pleasing because it tells you how healthy the dressing room is,” he said. “When you sign a new player straight away you rely on how he’ll be welcomed, and we have the perfect set-up for that. The senior players here deserve credit for that.

“James takes everything in his stride and he’s part of a group of young players who share the same football demeanour. Strong characters on the pitch, but then very respectful and keen to learn off it. John Stones and Ross Barkley are the same.

“They give you real encouragement for the future. Some young players enjoy a bit of success and you don’t know how solid they’ll be with their work.They get volatile but that’s not the case here. They’re respectful and hungry to succeed which is ideal.”

l Tickets are still on sale for the game against Tottenham Hotspur tomorrow (KO 1.30pm). Tickets start from £36 for adults and only £18 for Under-16s. Buy online at evertonfc.com/eticketing, calling 0871 663 1878 or visiting the box office, Everton Two in Liverpool One or the Ticket Quarter in Queen Square.

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